Combination of D-dimer and simplified pulmonary embolism severity index to improve prediction of hospital death in patients with acute pulmonary embolism.

2 Longitudinal studies have revealed an increasing trend in annual PE incidence rates over time. 3 As the clinical signs and symptoms of PE are non-specific, and the condition can even be asymptomatic, it is difficult to evaluate the severity and prognosis of PE based on clinical symptoms.

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